Divide 3 groups first.; } I, j9 P( R
i.e. 4 x 4 x 4.- X8 Y( p" b; z0 s7 @
Weight any 2 groups [1st]
7 t* j. C' @4 I0 ]+ Hthen you will know the heavier ball in which group.
3 W$ {- J$ i7 d/ yWeight any 2 balls in that group [2nd]
6 y' o. s, |8 P8 r; G) Y公仔箱論壇then you will know the heavier ball in which 2 balls.
; {9 T& b6 H% T5 G# F2 B公仔箱論壇Repeat again in remainders [3rd]公仔箱論壇, N& _4 S1 A$ r, u5 s
Got the heavier ball. |
發表於 2009-7-2 12:48 PM
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